 export const fmtDate = function (obj) {
   var date = new Date(obj);
   var y = 1900 + date.getYear();
   var m = "0" + (date.getMonth() + 1);
   var d = "0" + date.getDate();
   return y + "-" + m.substring(m.length - 2, m.length) + "-" + d.substring(d.length - 2, d.length);
 }